package com.pw.gmall.realtime.app.dwm;

import com.alibaba.fastjson.JSON;
import com.pw.gmall.realtime.app.BaseAppV2;
import com.pw.gmall.realtime.common.Constant;
import com.pw.gmall.realtime.entities.OrderWide;
import com.pw.gmall.realtime.entities.PaymentInfo;
import com.pw.gmall.realtime.entities.PaymentWide;
import com.pw.gmall.realtime.utils.KafkaUtils;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.KeyedStream;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.co.ProcessJoinFunction;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.util.Collector;

import java.time.Duration;
import java.util.HashMap;

/**
 * @Author: linux_future
 * @since: 2022/3/22
 **/
public class DwmPaymentWideAppV2 extends BaseAppV2 {
    public static void main(String[] args) {
        new DwmPaymentWideApp().init(3004,
                1,
                "DwmPaymentWideAppV2",
                "DwmPaymentWideAppV2",
                Constant.TOPIC_DWM_ORDER_WIDE, Constant.TOPIC_DWD_PAYMENT_INFO
        );
    }

    @Override
    protected void handler(StreamExecutionEnvironment env, HashMap<String, DataStreamSource<String>> stream) {

        KeyedStream<PaymentInfo, Long> paymentInfoStream = stream
                .get(Constant.TOPIC_DWD_PAYMENT_INFO)
                .map(json -> JSON.parseObject(json, PaymentInfo.class))
                .assignTimestampsAndWatermarks(
                        WatermarkStrategy
                                .<PaymentInfo>forBoundedOutOfOrderness(Duration.ofSeconds(3))
                                .withTimestampAssigner((pay, ts) -> pay.getTs())
                )
                .keyBy(PaymentInfo::getOrder_id);

        KeyedStream<OrderWide, Long> orderWideStream = stream
                .get(Constant.TOPIC_DWM_ORDER_WIDE)
                .map(json -> JSON.parseObject(json, OrderWide.class))
                .assignTimestampsAndWatermarks(
                        WatermarkStrategy
                                .<OrderWide>forBoundedOutOfOrderness(Duration.ofSeconds(3))
                                .withTimestampAssigner((pay, ts) -> pay.getTs())
                )
                .keyBy(OrderWide::getOrder_id);


        paymentInfoStream
                .intervalJoin(orderWideStream)
                .between(Time.minutes(-45), Time.seconds(5))
                .process(new ProcessJoinFunction<PaymentInfo, OrderWide, PaymentWide>() {
                    @Override
                    public void processElement(PaymentInfo left,
                                               OrderWide right,
                                               Context ctx,
                                               Collector<PaymentWide> out) throws Exception {
                        out.collect(new PaymentWide(left, right));
                    }
                })
                .map(JSON::toJSONString)
                .addSink(KafkaUtils.getKafkaSink(Constant.TOPIC_DWM_PAYMENT_WIDE));

    }


}
